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API Spec 7NRV (R2020)

Specification for Drill String Non-return Valves, First Edition, Includes Addendum 1 (2019)

standard by American Petroleum Institute , 07/01/2006

📝 Amendments Available

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About This Item

 

Full Description

This standard was formulated to provide the minimum acceptable requirements for Drill String Non-return Valve (NRV) equipment. It covers Drill String Non-return Valves, Non-return Valve Subs, Non-return Valve landing nipples, Non-return Valve Equalizing Heads and all components that establish tolerances and/or clearances which may affect performance or interchangeability of the NRV equipment. Non-return Valve Subs, Non-return Valve landing nipples, Non-return Valve Equalizing Heads and NRVs manufactured by different facilities or manufacturers may be supplied as separate items.
 

Product Details

Edition:
1st
Published:
07/01/2006
Number of Pages:
26
File Size:
1 file , 520 KB
Product Code(s):
G7NRV01C, G7NRV01, G7NRV01C, G7NRV01, G7NRV01C, G7NRV01
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This product is unavailable in Russia, Cuba, Syria, North Korea, Ukraine, Belarus, Iran
 

Amendments, rulings, supplements, and errata

  1. API Spec 7NRV (R2012) Addendum 1

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    Addendum to Specification for Drill String Non-return Valves, First Edition